JCombobox下拉式結合Table(表格)

一、首先設計一類別並繼承自JCombobox，而後進行版面配置及加入資料動作

(一)建構子利用setDefaultTableModel();進行相關設置 (二)setDefaultTableModel內容說明 private void setDefaultTableModel(){            DefaultTableModel tm = new DefaultTableModel(new Object[][]{},new String[]{"編號", "姓名"}); //建立DefaultTableModel並設定欄位            for (int i = 0;i < 100;i++) tm.addRow(new String[]{"0"+i,String.valueOf((char)('a'+i)) + "XSDDI"});//加入100筆虛擬資料            table.setModel(tm);//此table為全域，並設定Model為剛剛所創建之            table.setTableHeader(new JTableHeader());//去除標頭            table.addMouseListener(new MouseAdapter() {//加入滑鼠點擊事件            @Override public void mouseClicked(MouseEvent e) {            setEvent();            }     });            this.setEditable(true);//將Combobox設為可編輯，不只下拉選擇            JPanel popupPanel = new JPanel();//建立一Panel放置表格用            popupPanel.setBorder(new javax.swing.border.EmptyBorder(5,5,5,5));            popupPanel.setLayout(new BorderLayout());            popupPanel.setPreferredSize(new Dimension(150,150));//設定大小            JScrollPane jsp = new JScrollPane(table);//建立卷軸以放置Table，以便進行伸縮捲動            popupPanel.add(jsp);            try { this.setPopupComponent(popupPanel); } //設置元件               catch (Exception e) {e.printStackTrace();}          } (三)利用setPopupComponent()及getComboPopup()完成加入Pop元件 private BasicComboPopup getComboPopup() {           for (int i=0, n=getUI().getAccessibleChildrenCount(this); i<n; i++) {//進行搜尋                    Object component = getUI().getAccessibleChild(this, i);                    if (component instanceof BasicComboPopup) {return (BasicComboPopup) component;}           } return null; } public void setPopupComponent(JComponent component) throws Exception {              BasicComboPopup comboPopup=getComboPopup();//ComboPopup 介面基本實作                       if (comboPopup!=null && comboPopup instanceof JPopupMenu) {//將原本內容替換                                    comboPopup.removeAll();                                    comboPopup.add(component);                       } } (四)相關事件 private void setEvent() { this.setSelectedItem(table.getValueAt(table.getSelectedRow(), 0));//取得點選值 this.setPopupVisible(false); //將Pop隱藏 }

二、原始碼下載
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